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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Some basic utilities for aiding in the management of Tasks and Callbacks. | 5 // Some basic utilities for aiding in the management of Tasks and Callbacks. |
6 // | 6 // |
7 // AutoTaskRunner, and its brother AutoCallbackRunner are the scoped_ptr | 7 // AutoTaskRunner, and its brother AutoCallbackRunner are the scoped_ptr |
8 // equivalents for callbacks. They are useful for ensuring a callback is | 8 // equivalents for callbacks. They are useful for ensuring a callback is |
9 // executed and delete in the face of multiple return points in a function. | 9 // executed and delete in the face of multiple return points in a function. |
10 // | 10 // |
11 // TaskToCallbackAdapter converts a Task to a Callback0::Type since the two type | 11 // TaskToCallbackAdapter converts a Task to a Callback0::Type since the two type |
12 // hierarchies are strangely separate. | 12 // hierarchies are strangely separate. |
13 // | 13 // |
14 // CleanupCallback wraps another Callback and provides the ability to register | 14 // CleanupCallback wraps another Callback and provides the ability to register |
15 // objects for deletion as well as cleanup tasks that will be run on the | 15 // objects for deletion as well as cleanup tasks that will be run on the |
16 // callback's destruction. The deletion and cleanup tasks will be run on | 16 // callback's destruction. The deletion and cleanup tasks will be run on |
17 // whatever thread the CleanupCallback is destroyed in. | 17 // whatever thread the CleanupCallback is destroyed in. |
18 | 18 |
19 #ifndef MEDIA_BASE_CALLBACK_ | 19 #ifndef MEDIA_BASE_CALLBACK_ |
20 #define MEDIA_BASE_CALLBACK_ | 20 #define MEDIA_BASE_CALLBACK_ |
21 | 21 |
22 #include <vector> | 22 #include <vector> |
23 | 23 |
24 #include "base/callback.h" | 24 #include "base/callback_old.h" |
25 #include "base/memory/scoped_ptr.h" | 25 #include "base/memory/scoped_ptr.h" |
26 #include "base/task.h" | 26 #include "base/task.h" |
27 | 27 |
28 namespace media { | 28 namespace media { |
29 | 29 |
30 class AutoTaskRunner { | 30 class AutoTaskRunner { |
31 public: | 31 public: |
32 // Takes ownership of the task. | 32 // Takes ownership of the task. |
33 explicit AutoTaskRunner(Task* task) | 33 explicit AutoTaskRunner(Task* task) |
34 : task_(task) { | 34 : task_(task) { |
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105 private: | 105 private: |
106 scoped_ptr<CallbackType> callback_; | 106 scoped_ptr<CallbackType> callback_; |
107 std::vector<Task*> run_when_done_; | 107 std::vector<Task*> run_when_done_; |
108 | 108 |
109 DISALLOW_COPY_AND_ASSIGN(CleanupCallback); | 109 DISALLOW_COPY_AND_ASSIGN(CleanupCallback); |
110 }; | 110 }; |
111 | 111 |
112 } // namespace media | 112 } // namespace media |
113 | 113 |
114 #endif // MEDIA_BASE_CALLBACK_ | 114 #endif // MEDIA_BASE_CALLBACK_ |
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